Java SDK - Triage initial setup

[booniepepper]

Something about generating the Java SDK requires building twice.

See: https://github.com/openfga/sdk-generator/pull/160#discussion_r1281896547

Here's a gist with a failure: https://gist.github.com/booniepepper/0e197ea5b3c2a297338115f7eee4bb27

Subsequent builds work just fine